How dolphins outdo Olympic swimmers Mammal’s tail has 212 pounds of thrust — tripling Michael Phelps’ best

How dolphins outdo Olympic swimmers – Science- msnbc.com

A pod of common dolphin

from MSNBC http://www.msnbc.msn.com/id/27889197/

TROY, New York – Dolphins have a kick that would make Olympic gold-medalist Michael Phelps jealous — 212 pounds worth.

How
dolphins are able to swim so fast first preoccupied researchers back in
1936, when zoologist James Gray calculated the drag dolphins must
overcome to swim faster than 20 miles  an hour. Gray said dolphins
lacked the muscles to swim so fast, and yet they did. This became known
as Gray’s Paradox.

Gray
theorized that their speed possibly had something to do with their
skin. Over the decades, scientists found flaws in Gray’s work, and most
biologists have rejected his theory.

…. 

http://www.msnbc.msn.com/id/27889197/

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